Daffy Duck looks fairly normal while on the phone as Duck Twacy in ‘The Great Piggy Bank Robbery’ (1946).
But then he stretches out in a few in-betweens.
The credited animators in the cartoon are Rod Scribner, Manny Gould, Izzy Ellis and Bill Melendez. Someone will, no doubt, comment below about who they feel made these smears. Though other artists at Warners were known for them—Bobe Cannon and Virgil Ross come to mind—any (assistant) animator should have been able to draw them if that’s what was indicated. Weren’t there five animators in each unit at this point?
Clampett cuts to this scene after a couple of seconds of Daffy answering the phone.
I’m no expert, but this looks like the work a different animator (Ellis maybe?). Notice how Daffy’s fingers are tapered.